<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区 -->
      <el-col>
        <el-button type="primary" @click="addRolesVisible = true"
          >添加角色</el-button
        >
      </el-col>
      <!-- 添加角色的对话框 -->
      <el-dialog
        title="添加角色"
        :visible.sync="addRolesVisible"
        width="50%"
        @close="addRolesClose"
      >
        <!-- 内容主体区域 -->
        <el-form
          :model="addRoleInfo"
          ref="addRoleForm"
          :rules="addRoleFormRules"
          label-width="100px"
        >
          <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="addRoleInfo.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="addRoleInfo.roleDesc"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部按钮区域 -->
        <span slot="footer">
          <el-button @click="addRolesVisible = false">取 消</el-button>
          <el-button type="primary" @click="addRoles">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 角色列表区 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="i1"
              class="vcenter"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="i2"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="sssssremoveRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="i3"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{ scope.row }}</pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditRole(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeRoles(scope.row.id)"
              >删除</el-button
            >
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!--编辑角色信息区域 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editRolesVisible"
      width="50%"
    >
      <el-form
        :model="editRoleInfo"
        ref="editRoleForm"
        label-width="120px"
        :rules="editRoleInfoRules"
      >
        <el-form-item label="修改角色名称" prop="roleName">
          <el-input v-model="editRoleInfo.roleName"></el-input>
        </el-form-item>
        <el-form-item label="修改角色描述" prop="roleDesc">
          <el-input v-model="editRoleInfo.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editRolesVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 这是树形控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defkeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Roles",
  data() {
    return {
      // 所有角色列表数据
      rolesList: [],
      // 添加角色弹出框初始状态
      addRolesVisible: false,
      // 存储角色数据
      addRoleInfo: {
        roleName: "",
        roleDesc: "",
      },
      // 添加角色规则
      addRoleFormRules: {
        roleName: [
          { required: true, message: "请输入角色名称", trigger: "blur" },
        ],
        roleDesc: [
          { required: true, message: "请输入角色描述", trigger: "blur" },
        ],
      },
      //编辑角色初始状态
      editRolesVisible: false,
      // 编辑角色存储数据
      editRoleInfo: {},
      // 修改表单校验规则
      editRoleInfoRules: {
        roleName: [
          { required: true, message: "请修改角色名称", trigger: "blur" },
        ],
        roleDesc: [
          { required: true, message: "请修改角色描述", trigger: "blur" },
        ],
      },
      //控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 存储所有权限的数据
      rightsList: [],
      //树形控件的绑定控件
      treeProps: {
        children: "children",
        label: "authName",
      },
      // 默认选中的节点id值数组
      defkeys: [],
      // 存储当前即将分配权限的角色id
      roleId: "",
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    // 获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      // console.log(res);

      if (res.meta.status !== 200)
        return this.$message.error("获取角色列表数据失败");

      this.rolesList = res.data;
    },
    // 点击按钮 添加角色
    addRoles() {
      this.$refs.addRoleForm.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        const { data: res } = await this.$http.post("roles", this.addRoleInfo);
        // console.log(res);
        if (res.meta.status !== 201) {
          return this.$message.error("角色创建失败");
        }
        this.$message.success("角色创建成功");
        this.addRolesVisible = false;
        this.getRolesList();
      });
    },
    // dialog关闭时重置表单
    addRolesClose() {
      this.$refs.addRoleForm.resetFields();
    },
    // 点击修改角色信息
    async showEditRole(id) {
      // console.log(id);
      this.rolesList.forEach(async (item) => {
        // console.log(item.id);
        // const params = item.id;
        // console.log(params);
        // console.log(id);
        if (id === item.id) {
          const name = item.roleName;
          // console.log(name);
          this.editRolesVisible = true;
          const data = { roleName: name };
          const { data: res } = await this.$http.put("roles/" + id, data);
          // console.log(id);
          // console.log(res);
          if (res.meta.status !== 200)
            return this.$message.error("修改角色信息失败");
          this.editRoleInfo = res.data;
          // // 重新调用数据
          this.getRolesList();
          // // 关闭对话框
          this.addRolesVisible = false;
          // console.log(this.editRoleInfo.roleId);
        }
      });
      // console.log(name);
      // console.log(params);
    },
    // 确认提交修改
    editRole() {
      this.$refs.editRoleForm.validate(async (valid) => {
        console.log(valid);
        if (!valid) return;
        const { data: res } = await this.$http.put(
          "roles/" + this.editRoleInfo.roleId,
          {
            roleName: this.editRoleInfo.roleName,
            roleDesc: this.editRoleInfo.roleDesc,
          }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("修改信息失败");
        }

        this.$message.success("修改信息成功");
        // 关闭弹窗
        this.editRolesVisible = false;
        // 重新加载数据
        this.getRolesList();
      });
    },
    // 删除用户
    async removeRoles(id) {
      // 询问用户是否确认删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        { confirmButtonText: "确定", cancelButtonText: "取消", type: "warning" }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      } else {
        // console.log("确认了删除");
        const { data: res } = await this.$http.delete("roles/" + id, id);
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error("删除失败");
        } else {
          this.$message.success(res.meta.msg);
        }
        // 刷新用户列表
        this.getRolesList();
      }
    },
    // 根据id删除对应的权限
    async removeRightById(role, rightId) {
      // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该权限, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("取消删除");
      } else {
        const { data: res } = await this.$http.delete(
          `roles/${role.id}/rights/${rightId}`
        );
        if (res.meta.status !== 200) {
          return this.$message.error("删除权限失败");
        }
        // this.$message.success("删除权限成功");
        // // 重新加载数据
        // this.getRolesList();
        // 把服务器返回的最新权限数据直接赋值给角色的子级数据
        // 可以防止列表刷新
        role.children = res.data;
      }
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      // 保存角色的id值，供添加权限使用
      this.roleId = role.id;
      // 获取所有权限的数据
      const { data: res } = await this.$http.get("rights/tree");
      if (res.meta.status !== 200) {
        return this.$message.error("获取权限失败");
      }
      // 获取到的权限数据 保存到rightsList.data中
      this.rightsList = res.data;

      // 调用递归获取三级节点的id
      this.getLeafKeys(role, this.defkeys);

      // console.log(this.rightsList);
      // 弹出对话框
      this.setRightDialogVisible = true;
    },
    // 通过递归的形式获取角色下所有三级权限的id，并保存到defkeys数组中
    getLeafKeys(node, arr) {
      if (!node.children) {
        // 如果当前node节点不包含children属性，则说明该节点是三级节点
        return arr.push(node.id);
      }
      // 递归循环node.children里的所有数组
      // 将item里的值传递保存到arr中数组去
      node.children.forEach((item) => this.getLeafKeys(item, arr));
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defkeys = [];
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ];
      // console.log(keys);
      const idStr = keys.join(",");
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败");
      } else {
        this.$message.success("分配权限成功");
        //  刷新列表
        this.getRolesList();
        //  隐藏对话框
        this.setRightDialogVisible = false;
      }
    },
  },
};
</script>

<style lang="less" scoped>
.el-table {
  margin-top: 55px;
}
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>